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Published on: August 9, 2022
Performance of structured lipids incorporating selected phenolic and ascorbic acids
Eliza Gruczynska1, Roman Przybylski1, Felix Aladedunye2
1Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, Alberta T1K 3M4, Canada.
Novel structured lipids were created using enzymatic transesterification to enhance frying oil stability and performance. Ascorbic acid incorporation protected alpha-tocopherol, improving the nutritional and oxidative properties of frying oils.
Area of Science:
- Food Chemistry
- Lipid Science
- Nutraceuticals
Background:
- Frying conditions necessitate antioxidants for oil and food protection.
- Structured lipids offer a novel approach to incorporating functional ingredients.
Purpose of the Study:
- To create novel structured lipids with enhanced oxidative stability and frying performance.
- To evaluate the impact of incorporating natural antioxidants (ascorbic and phenolic acids) into canola oil via enzymatic transesterification.
Main Methods:
- Enzymatic transesterification using Lipozyme RM IM lipase.
- Formation of structured lipids from canola oil and natural antioxidants.
- Evaluation of frying performance and oxidative stability of the developed lipids.
Main Results:
- The novel structured lipids demonstrated significantly improved frying performance compared to canola oil.
- Structured lipids exhibited enhanced resistance to oxidative deterioration.
- Ascorbic acid within the acylglycerol structure protected alpha-tocopherol from thermal degradation, unlike phenolic acids.
Conclusions:
- Developed structured lipids offer improved oxidative stability and frying performance.
- Incorporation of ascorbic acid provides a protective effect on alpha-tocopherol during thermal processing.
- These structured lipids represent a promising strategy for enhancing the nutritional profile and functionality of food lipids.
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